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When using Firebase libraries I encountered a problem, google play services and google play store are not found in the operating system
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T20
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jason
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jason
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This device already has Google Play Services and Google Play Store. you need download the Google Services SDK and added ACCESS_FINE_LOCATION permission in manifest
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it is possible that the failure in these devices is due to a problem in the operating system, but reloading the Android firmware would erase the sales data stored in the device's memory. It is imperative to develop a way to maintain the data when reloading the Android firmware.
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jason
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for the QR reader - we are using the telpo_api with RSReader class as in TPS530 devices. But we don't receive any bytes using rsReader.rs_read() the QR reader beeps and recognizes the QR code, but there are no bytes coming from RSReader
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T20
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jason
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my main issue for now, is managing to handle Ultralight EV1 tag. for that we are used to send raw APDU. I have tried, to use the nfc.transmit method, but I suppose it needs to receive more than just the basic apdu code, and it's more low level than I expect. Basically I'm used to transceive : 0x60 -> GET_VERSION 0x1B... -> PWD_AUTH 0x30... -> FAST_READ ... But here passing those value give me errors. I had no issue using the m1_authenticate m1_read_block m1_write_block If you have some sample code, managing to read/write or send the GET_VERSION apdu to an ultralight code, it should be enough for me to take after.
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T20
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jason
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May I use google firebase in yours products?
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T20
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jason
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Would you tell us commands to change the qr scanning mode in Telpo T-20? We need to turn off the scanner after scanning. now the problem is that the scanner does not turn off after reading and immediately reads the same qr
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T20
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jason
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Hello team, I was able to check the demo for the NFC Mifare classic. The problem with the demo is you need to press a button to open the nfc, then you need to press another to authenticate and finally press another to read. With our app we need to be able to do all this steps without user interaction. Apart from that we need the app to be listening all the time for an incoming nfc tag. That’s why I was asking you last time if there’s something like a listener similar to the one you have with the QR Reader (setHardReaderListener). I would really appreciate if you can help me with this. Thank you.
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T20
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jason
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I was testing our app with the T20. The NFC and QR reader did not work with our app. Are this functionalities native to the device or they work with an SDK? Thank you
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T20
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jason
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Which function in the Keyple libraries is used to know if the SAM modules are available on T20?
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T20
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ramdelmx
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How we can do send and change the state to receive in same time using RS485 ?
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T20
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jason
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i have a TPS550, i have forgotten the password. please when i reset, its still showing me to enter the password. please i need the firmware, tools and instructions on how to flash it, or anything.
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TPS550
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rodger miller
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Welcome to Telpo Q&A,
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